#643D84#643D84

#643D84 is a dark, moderate violet. Relative luminance 0.077; OKLCH L 43.9% C 0.119 H 307.6°. Best body text is #FFFFFF at 8.26:1 contrast (WCAG AA passes).

Color values

HEX	#643D84
RGB	rgb(100, 61, 132)
HSL	hsl(273, 37%, 38%)
HSV	hsv(273, 54%, 52%)
CMYK	cmyk(24.2%, 53.8%, 0%, 48.2%)
CIE-LAB	lab(33.38, 31.48, -33.51)
CIE-LCH	lch(33.38, 45.98, 313.21°)
OKLab	oklab(43.88% 0.0723 -0.094)
OKLCH	oklch(43.88% 0.119 307.6)
XYZ	xyz(11.0883, 7.7129, 22.7299)
Luminance	0.0771 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643D84 #5D843D

analogous

#403D84 #643D84 #843D80

triadic

#643D84 #84643D #3D8464

tetradic

#643D84 #84403D #5D843D #3D8084

square

#643D84 #84403D #5D843D #3D8084

split-complementary

#643D84 #80843D #3D8440

monochromatic

#251630 #442A5A #643D84 #8450AE #A17AC1

Accessibility & contrast

On white

8.26

#643D84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#643D84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643D84

8.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643D84	#FFFFFF	#000000	##FFFFFF
##643D84	1.00	8.26	2.54	8.26
#FFFFFF	8.26	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#284D86

Deuteranopia (green-blind)

#344F82

Tritanopia (blue-blind)

#5F495A

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #643d84;
/* rgb */ color: rgb(100, 61, 132);
/* oklch */ color: oklch(43.9% 0.119 307.6);

Tailwind

colors: {
  custom: {
    50: '#9274a8',
    500: '#643d84',
    950: '#000000',
  },
}

SCSS

$custom: #643d84;
$custom-light: #9274a8;
$custom-dark: #000000;

JSON

{
  "hex": "#643d84",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 132
  },
  "hsl": {
    "h": 272.958,
    "s": 36.788,
    "l": 37.843
  },
  "oklch": {
    "l": 0.4388,
    "c": 0.1186,
    "h": 307.6
  },
  "luminance": 0.07713
}

Semantic roles & 50–950 ramp

primary

#643D84

secondary

#8CAB71

accent

#CD5B8E

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643D84

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →